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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
/* <DESC>
* Performs an FTP upload and renames the file just after a successful
* transfer.
* </DESC>
*/
#ifdef _MSC_VER
#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS /* for fopen(), strerror() */
#endif
#endif
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <curl/curl.h>
#ifdef _WIN32
#include <io.h>
#undef stat
#define stat _stati64
#undef fstat
#define fstat _fstati64
#define fileno _fileno
#else
#include <unistd.h>
#endif
#define LOCAL_FILE "/tmp/uploadthis.txt"
#define UPLOAD_FILE_AS "while-uploading.txt"
#define REMOTE_URL "ftp://example.com/" UPLOAD_FILE_AS
#define RENAME_FILE_TO "renamed-and-fine.txt"
/* NOTE: if you want this example to work on Windows with libcurl as a DLL,
you MUST also provide a read callback with CURLOPT_READFUNCTION. Failing to
do so might give you a crash since a DLL may not use the variable's memory
when passed in to it from an app like this. */
static size_t read_cb(char *ptr, size_t size, size_t nmemb, void *stream)
{
unsigned long nread;
/* in real-world cases, this would probably get this data differently
as this fread() stuff is exactly what the library already would do
by default internally */
size_t retcode = fread(ptr, size, nmemb, stream);
if(retcode > 0) {
nread = (unsigned long)retcode;
fprintf(stderr, "*** We read %lu bytes from file\n", nread);
}
return retcode;
}
int main(void)
{
CURL *curl;
CURLcode result;
FILE *hd_src;
struct stat file_info;
curl_off_t fsize;
struct curl_slist *headerlist = NULL;
static const char buf_1[] = "RNFR " UPLOAD_FILE_AS;
static const char buf_2[] = "RNTO " RENAME_FILE_TO;
/* get a FILE * of the file */
hd_src = fopen(LOCAL_FILE, "rb");
if(!hd_src) {
printf("Could not open '%s': %s\n", LOCAL_FILE, strerror(errno));
return 2;
}
/* to get the file size */
if(fstat(fileno(hd_src), &file_info) != 0) {
fclose(hd_src);
return 1; /* cannot continue */
}
fsize = file_info.st_size;
printf("Local file size: %" CURL_FORMAT_CURL_OFF_T " bytes.\n", fsize);
/* In Windows, this inits the Winsock stuff */
result = curl_global_init(CURL_GLOBAL_ALL);
if(result) {
fclose(hd_src);
return (int)result;
}
/* get a curl handle */
curl = curl_easy_init();
if(curl) {
/* build a list of commands to pass to libcurl */
headerlist = curl_slist_append(headerlist, buf_1);
headerlist = curl_slist_append(headerlist, buf_2);
/* we want to use our own read function */
curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_cb);
/* enable uploading */
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
/* specify target */
curl_easy_setopt(curl, CURLOPT_URL, REMOTE_URL);
/* pass in that last of FTP commands to run after the transfer */
curl_easy_setopt(curl, CURLOPT_POSTQUOTE, headerlist);
/* now specify which file to upload */
curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
/* Set the size of the file to upload (optional). If you give a *_LARGE
option you MUST make sure that the type of the passed-in argument is a
curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must
make sure that to pass in a type 'long' argument. */
curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, fsize);
/* Now run off and do what you have been told! */
result = curl_easy_perform(curl);
/* Check for errors */
if(result != CURLE_OK)
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(result));
/* clean up the FTP commands list */
curl_slist_free_all(headerlist);
/* always cleanup */
curl_easy_cleanup(curl);
}
fclose(hd_src); /* close the local file */
curl_global_cleanup();
return (int)result;
}
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